This Division handles the specialized fields of Post Weld Heat Treatment (PWHT), stress relieving and Pre Heating services to meet the onsite requirements of Oil & Gas, Refinery and Petrochemical industries. The division also handles the rental and sales of equipment & consumables as well as providing calibration services. The team had established its reputation in high quality workmanship and on time project execution and have a strong presence in such services. Our specialized heat treatment services include Post Weld Heat Treatment, Pre-heating, Post-heating, Annealing & Normalizing, Refractory Dryouts / Paint Curing, De-Chocking of piping and equipments (i.e Polimer, Polyethylene etc...), Furnace firing (Electrical/Fuel burners), Hardness Testing, Equipment & consumables sales and rental, Repair & calibration of equipment.


  • Heat Treatment

    Bolt TorquingHeat treatment is the controlled heating and cooling of metals. Steels are treated for softening/Hardening/Material Modification.

  • Post Weld Heat Treatment(PWHT)

    Bolt TorquingHeat Treatment of the welded joint, normally to sub-critical temperatures after completion of welding operations.

    • Electrical Resistance Method • Furnace or Internal firing • Stress Relaxation • Tempering • Hydrogen Removal • Improvement in material’s hardness • Toughness and metallurgical properties of the weld
  • Pre-heating

    Bolt TorquingHeating of the base metal at the area to be welded. Reasons:

    • To avoid HAZ (Heat affected Zone) / weld metal cold cracking • To minimize residual stress • To provide sufficient ductility in the weld metal and HAZ
  • Annealing/Normalizing

    Catalyst Handling ServiceTo bring back the base metal weldability.

    • Heat to a temperature 40 – 50 0 C above the upper critical point. • Soak for sufficient length of time. • Annealing: Cooling very slowly (Furnace Cooling) • Normalizing: Cooling in air • To improve mechanical properties • Tensile strength, impact value • In turn, better resistance to brittle fracture (improved ductility) • To refine Grain Size • To relieve internal stresses
  • Solution Annealing

    Catalyst Handling ServiceSolution annealing is a high temperature heat treating process performed on steels, here austenitic Steel is heated to above 1050°C followed by Soaking and Quenching. Reasons:

    • To Soften the material. • Remove carbide precipitation formed at grain boundaries during manufacturing process. • To improve corrosion resistance.
  • Dehydrogenation Heat Treatment

    Catalyst Handling ServiceDehydrogenation Heat treatment is performed to remove hydrogen from material prior to manufacture, fabrication or repair activity. DHT / HBO of the component is normally heated to 350⁰C / 400⁰C for 4 hours holding period.

  • Hardness Testing

    Catalyst Handling ServiceHardness is the property of a material that enables it to resist plastic deformation, usually by penetration. However, the term hardness may also refer to resistance to bending, scratching, abrasion or cutting.

    Brinell Hardness Test: A comparison indention hardness test using calibrated machine/equipment, into the material under test and measuring the impression diameter and comparing with a measurement in a known BHN test bar.